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import sys
from requests.adapters import HTTPAdapter


class BiggerBlockSizeHTTPAdapter(HTTPAdapter):
    def get_connection(self, url, proxies=None):
        """Returns a urllib3 connection for the given URL. This should not be
        called from user code, and is only exposed for use when subclassing the
        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.

        :param url: The URL to connect to.
        :param proxies: (optional) A Requests-style dictionary of proxies used on this request.
        :rtype: urllib3.ConnectionPool
        """
        conn = super(BiggerBlockSizeHTTPAdapter, self).get_connection(url, proxies)
        system_version = tuple(sys.version_info)[:3]
        if system_version[:2] >= (3, 7):
            if not conn.conn_kw:
                conn.conn_kw = {}
            conn.conn_kw['blocksize'] = 32768
        return conn
